Saw-setting device



ly 1930. E. c. STEARNS SAW SETTING DEVICE Filed Nov. 17, 1925 .2 ran/fox6.6,.

V taken on line 3-3, Figure 1.

l atented July 15, 1930 NIT STATS 'nnwAnn o. srnnnivs, on SYRACUSE, nwYonK SAW-SETTING DEVICE I Application filed November 17, 192a SerialNo. 69,595.

This invention relates to a saw-setting device of the lever-operatedslide a-nd rotary anvil type in which the barrel carrying the slide andanvil is provided with a depending 5 integral handle in opposed relationto a depending lever whereby the lever and handle may be gripped by oneand the same hand for forcingthe slide to its setting position againstthe action of a suitable retracting spring. Q 7

The main object is to extend the integral handle and its cooperativelever from the barrel across the produced axis of the rotarilyadjustable anvil so as to bring the, ad-

justing means for the anvil in more convenient position for adjustmentby one hand while the device is held by the handle and lever in theother hand and also to enable the user to visually determine theposition of different portions of the face of the rotary anvilrelatively to thehammer slide than would be possible if the handle andlever extended in the same direction as the axis of therotary anvil.

Other objects and uses relating to specific parts of the device will bebrought out in the following description.

In the drawings Figure 1 is an end view of a saw-setting deviceembodying the various featuresof my invention.

Figure 2 is a longitudinal sectional view of I the same, taken on line2-2, Figure I.

Figure 3 is a transverse sectional view Figure .4: is an end face viewof the anvil supporting head. I

Figure 5 is an inner face View of the anvil.

As illustrated, this device comprises a barrel 1 having one end providedwith an integral handle 2 and its other end formed with an integralextension or head -3, the end of'the barrel -l-' adjacent the head 3being provided with a lug lr'which together with the head 3;- extend inthe same direction as the handle 2 but in spaced relationto each otherand some distance from the handle, said barrel being provided with anintermediate when the handle end of the hand lever -9 lug el in spacedrelation to the handle -2 and front lug 4, Figure 2.

The barrel l is provided with length wise guides or bearings -5 and -5-for receiving'and guiding a longitudinally movable'hainmer slide orplunger 6 the inner end ofwhich is normal to its axis as shown in Figure2, the bearings 5 being arranged in spaced relation for receiving aspring 7.' which is coiled around the int-en mediate portion ofthe slide6 and has one end engaged with the inner face of he lug l. in which thebearing -5- is formed and its other end engaged witn a hand pin 8, thelatter being secured in a diametrical opening in the slide 6 to projectoutwardly or upwardly beyond the upper face of the barrel 1 as shown inFigures 2. and 3, the lower side of the barrel between the lugs beingopenedto permit the removal and replacement of the spring 7.

The bearing 5 is also spaced longitudinally from the handle -2- for thereception of. one end of a hand lever 9- which is pivoted at 10 to andbetween opposite or laterally spaced walls of the barrel -,1 and has oneend extended from the pivot 10 in the same general, direction as thehandle 2.

The other or upper end of the hand lever -9 is provided with an abutment-11 engaging the inner end of the slide or plunger 6 for forcing theplunger enclwise against the action of the spring 'Z'- is drawnorpressed toward the handle The outer end of the slide or plunger 6-extendsthrough and beyond the front face of the lug -4r and bearing 5-and is provided with beveled sides--12 forming a hammer tooth forengaging and setting the teeth ofthe saw, the handle 2 being providedwith an opening 2'-in alinement with'the'bearings 5 and 5 to permit theremoval and replacement of the plunger 12 therethrough.

The head 8 is integrally united to the front end of the handle by anupwardly arched yoke portion -13 and is preferably disposed in adownwardly .and forwardly position.

inclined plane in spaced relation to the lug 4 to form an interveningsaw-receiving space -14.

This head 3- is also provided with a journal bearing -15 for theintermediate portion of a rotary spindle 16 which extends through andbeyond opposite faces of thehead at right angles to the plane thereofand, therefore, at an angle to and slightly below the produced axis ofthe slide or plunger 6-.

A circular disk or anvil 17 is eccentrically secured to the inner end ofthe spindle 16 to rotate therewith and is provided with an annularconical or beveled inner face --18- eccentric to its axis of rotation,allxportions of which are adapted to be present in op osed relation tothe outer end or hammer ace of the plunger -6- as the shaft or spindle-16- is adjusted rotarily for varying the amount of set of the saw teethwhen the tooth of the plunger -6- and registering portion of the beveledface -l8 of the anvil are brought into pressing co-action upon anyindividual tooth of the saw the portion of the beveled anvil faceopposedto the plunger being also norand to the axis of'the plunger as shown inFigure 2.

he outer end of the spindle -16 is provided with a knob or handle 19- bywhich the spindle and anvil may be turned and is also provided with apointer --20 movable around a suitable dial -21- on the adjacent endface of the lug 3- for indicating the amount of set which may benecessary to impart to the saw teeth.

An adjusting screw 22 is mounted in a threaded aperture in the lug 4-directly below the axes of the plunger -6- and spindle -16- and has itsinner end pro vided with a knob or handle -23 by which it may be turned.

A lock nut -24 is engaged with the screw -22--- at the outer face of thelug 4 for holding the screw in its adjusted The outer end -25 of theadusting screw. is rounding or spherical to form a bearing for one sideof the saw blade 7 while the other side is adapted to rest against theinner flat face as 26 of the anvil The adjustment of the screw -22- ismade to compensate for var-yin thicknesses of saws which may beinterposeif between the inner flat face of the anvil -17- and bearingface 25-- of the screw to serve as guides for the saw blade in shiftingthe same to register difi'erent teeth with the hammer end of the plunger-6-.

The barrel --1-, handle -2 and lugs ---3--, and '4-, together with theyoke '-18- and. hand lever -9- are preferably made of cast iron whilethe remaining parts are made of suitable metal such as steel hardened atthe ends where they contact with the saw blade or-tecth of the saw forstrength and durability.

The yoke 13 is provided with a vertical sight opening -13 therethroughregistcring with the anvil -l7- and adjacent end of the slide -6- toenable the operator to properly register the independent teeth of thesaw with the adjacent faces of the slide -6-- and anvil -17-, the loweredges of the okc being disposed in a transverse plane sli litl above theupper face of the hammer cm 0 the slide --6 to form a limiting stop forthe saw blade when the latter is pressed in operative position forsettin the teeth thereof and thereby assuring a uni orm depth of set ofsaid teeth.

A sheet metal plate .2T is slidable endwise of and upon the upper faceof the barrel -1- and has its forward end oflset downwardly at 28 andprovided with an aperture for receiving the adjacent end of the slide -6which serves to hold the front end of the plate against upwarddisplacement while permitting its longitudinal movement.

The rear end of the plate --27- is provided with an upwardly extendinghandle portion -2S' by which the plate may be moved longitudinally. v

The intermediate portion of the plate is provided with a series of inthis instance three lengthwise parallel slots 29, -30- and 30' which areconnected at their rear ends by a transverse slot -31, the slot -29being arranged along the longitudinal center of the plate while theslots -30- and -30 are arranged equal distances from and at oppositesides of the central slot.

These slots 29-, -30 and 30- and also the transverse slot -31- areadapted to receive the upwardly projecting end of the hand pin 8- on theslide While the walls of each slot serve to hold the pin and slide inany of its angular-1y adjusted positions.

That is, the central slot -29- serves to hold the slide -6 in positionfor setting what may be termed straight teeth while the slots 30 and -30serve to hold the slide at different angles for setting reverselyinclined teeth.

The plate -27 is preferably made of,

spring metal and is provided with a lock pin -32- adapted to engage inan aperture -33- in the upper side of the barrel for holding the platein its locking position against endwise movement and thereby holding theslide 6- in any position of adj ustment with the pin in itscorresponding slot in the plate.

Operation The eccentric anvil 17- is first adjusted rotarily accordingto the amount of set which it may be desired to impart to the teeth ofthe saw after or before which the slide -6 may be adjusted rotarily tobring its hammer end into proper position for setting straight orreversely inclined teeth. 7

The blade of the saw is then placed in operative position between theadjacent faces of the anvil -17 and screw 22 with the teeth of the sawbetween the hammer end of the slide 6 'and registering portion of theanvil 17-, it being understood that the screw 22 has been previouslyadjusted to assist in properly guiding the saw when shifting it forregistering the teeth to be set with the slide and anvil.

While the saw is being placed in operative position for setting theteeth thereof the handle 2 is placed in the palm of the hand while thetrigger or lever 9 is gripped by the fingers of the same hand and drawntoward the handle 2- thereby forcing the slide -6 forwardly against theaction of the retracting spring 7- for setting the registering tooth ofthe saw against the registering portion of the anvil '17-, the slide -6and its operating lever -9 being retracted to their normal positionsimmediately upon the release of the pressure upon the hand lever. Thehandle -2- and hand lever -9 extend substantially the same distance fromthe pivot l0- and in the same direction and enables the user to firmlyhold the device with one hand while the other hand is free to shift thesaw endwise as may be desired for setting the teeth thereof.

What I claim is:

A saw-setting device comprising a barrel having a top wall, a handlesecured to and extending downwardly from the rear end of the top wall atapproximately right angles thereto, a lug secured to and extendingdownwardly from the front end of the top wall of the barrel, anintermediate lug secured to and extending downwardly from the top wallof the barrel in spaced relation to the handle and front lug, said lugshaving alined guide openings, a saw-setting plunger slidable in saidguide openings, a hand lever pivoted to the barrelbetween the handle andintermediate lug for operating the plunger to its sawsetting position, aspring in the space between the lugs for retracting the plunger, and anannular supporting head integral with the front end of the barrelpositioned in front of and in spaced relation to the front lug incombination with an anvil eccentrically journaled in said head to rotateabout an axis inclined to the path of movement of the plunger.

In witness whereof I have hereunto set my hand this 6th day of November,1925.

EDWARD G. STEARNS.

